Three Vouchers & Cashback 2021

Updated September 17, 2021
Getting the best mobile, broadband and SIM plan for your home and handsets is easy with Three! Browse our Three vouchers and Three discount codes for extra savings.

50%
OFF
100 uses today

SIM plans for your phone now for 50% off (from £5 monthly)

50% Off
100 uses today

SIM plans for your phone now for 50% off (from £5 monthly)

£22
9 uses today

5G Hub Broadband for £22 monthly

£22
9 uses today

5G Hub Broadband for £22 monthly

£80
OFF
9 uses today

Up to £80 cash reward when you Refer a Friend

Get Deal
£80 Off
9 uses today

Up to £80 cash reward when you Refer a Friend

£14
3 uses today

30GB Sim Only offer for £14 per month for 24 months

£14
3 uses today

30GB Sim Only offer for £14 per month for 24 months

50%
OFF
9 uses today

Up to 50% off phones, data, and enjoy free gifts with these student offers

Enjoy these Three mobile, tablet, and smart tech offers for students and score free gifts plus 50% off for the first 6 months!
50% Off
9 uses today

Up to 50% off phones, data, and enjoy free gifts with these student offers

Enjoy these Three mobile, tablet, and smart tech offers for students and score free gifts plus 50% off for the first 6 months!

FROM
£5
1 use today

Data boosts from £5

From £5
1 use today

Data boosts from £5

FREE
UPGRADE
3 uses today

Get 200MB of free data every month with the free Data Reward SIM card

Free Upgrade
3 uses today

Get 200MB of free data every month with the free Data Reward SIM card

FROM
£19
3 uses today

Customer Offers: Plans, devices, and free gifts with plans starting at £19 a month

From £19
3 uses today

Customer Offers: Plans, devices, and free gifts with plans starting at £19 a month

FREE
GIFT
2 uses today

Free Buds Pro and Youtube Subscription with the Samsung Galaxy 21 phone

Free Gift
2 uses today

Free Buds Pro and Youtube Subscription with the Samsung Galaxy 21 phone

50%
OFF
20 uses today

Unlimited 24 month SIM only deal for £10 (50% off)

50% Off
20 uses today

Unlimited 24 month SIM only deal for £10 (50% off)

FREE
DELIVERY
2 uses today

Free next day delivery on all devices - phones, tablets, and more

Free Delivery
2 uses today

Free next day delivery on all devices - phones, tablets, and more

50%
OFF
5 uses today

6 Month Deal: Unlimited data SIMs plans for 50% off (now £10 a month)

50% Off
5 uses today

6 Month Deal: Unlimited data SIMs plans for 50% off (now £10 a month)

EXTRA £426
2 uses today

Up to an extra £426 when you trade in your old device towards a new Samsung Fold3 or Flip3

Get Deal
Extra £426
2 uses today

Up to an extra £426 when you trade in your old device towards a new Samsung Fold3 or Flip3

FROM
£22
3 uses today

Broadband internet from £22 a month

From £22
3 uses today

Broadband internet from £22 a month

FROM
£19.99
2 uses today

Pay as you go phones starting from £19.99 upfront

From £19.99
2 uses today

Pay as you go phones starting from £19.99 upfront

FROM
£19
1 use today

Mobile phone deals with prices from £19 monthly

Need a new phone? Visit this page and find the perfect phone for you! Discover deals on Samsung, iPhones, and more starting from £19 a month!
From £19
1 use today

Mobile phone deals with prices from £19 monthly

Need a new phone? Visit this page and find the perfect phone for you! Discover deals on Samsung, iPhones, and more starting from £19 a month!

FREE
SIM
1 use today

Get a free Pay As You Go SIM

Do you prefer a monthly basis instead of a set contract? Order your free Three Pay As You Go SIM today and recharge at your own pace!
Free SIM
1 use today

Get a free Pay As You Go SIM

Do you prefer a monthly basis instead of a set contract? Order your free Three Pay As You Go SIM today and recharge at your own pace!

FROM
£15
1 use today

Accessory Deals: Screen protectors, cases, chords and more starting at £15

From £15
1 use today

Accessory Deals: Screen protectors, cases, chords and more starting at £15

FREE
TV
2 uses today

3 months of Apple TV for free with the iPhone 12 Pro Max

Free TV
2 uses today

3 months of Apple TV for free with the iPhone 12 Pro Max

FROM
£13
2 uses today

Mobile Broadband SIM plans from £13 a month

From £13
2 uses today

Mobile Broadband SIM plans from £13 a month

£1
OFF
2 uses today

Over £1 in savings with the Price Promise

If you find a better deal for your business contract, Three will beat it by at least £1 a month with the Price Promise!
£1 Off
2 uses today

Over £1 in savings with the Price Promise

If you find a better deal for your business contract, Three will beat it by at least £1 a month with the Price Promise!

DOUBLE DATA
4 uses today

Over 2X the data on select tablets

Double Data
4 uses today

Over 2X the data on select tablets

FREE
SIM
1 use today

Free Pay As You Go SIM delivered in a few days

Free SIM
1 use today

Free Pay As You Go SIM delivered in a few days

FREE
APP
2 uses today

Download the Three app for free

Free App
2 uses today

Download the Three app for free

Popular Expired Three Discount Codes
50% Off
1 use today

Extra 50% off SIM Only plan with unlimited data fo the first 6 months

Save half price right now with this Three SIM Only offer!

FREE
DELIVERY
1 use today

Free Delivery
1 use today

Free delivery on all devices

£12 Off
3 uses today

£12 off the Samsung Galaxy S20 monthly plan (now £30)

Pick up the Samsung Galaxy S20 and save £12 with the 30GB monthly plan (which was £12).

Popular Three Voucher Codes

Vouchers and DealsValueDiscount TypeStatus
Three SIM deals for over 10% off10% OffOnline DealOngoing
Free delivery with this Three discount codeFree DeliveryOnline VoucherExpired
Three plans for up to 10% off10% OffOnline DealOngoing


Tons Of Easy Savings

Looking for an additional plan or device as an existing customer? They have plenty of awesome Three deals to help you out. Add an extra SIM or device to your existing account or complete a Three upgrade to a shiny new phone in just a few clicks by browsing their “Offers” page online. We’ll also post all of the best Three vouchers and upcoming Three sales right here so you don’t miss out!

If you’re a student on a tight budget, you’re in luck. With their exclusive Three discounts for students, you can get your next phone, SIM, or broadband purchase for less. Just enter your university email address to access a wide range of specials just for students. Whether you’re looking for a 1-month or 12-month SIM plan, they’re undoubtedly the best choice for you.

Downloading Discounts

With the Three app for iOS and Android, anything is possible. From tracking your latest bill and usage to completing your next Three top-up, in just a few taps, the whole world can be yours. Now you can manage your account on the move; some features include viewing your Pay As You Go credit balance, bill breakdowns, check your upgrade eligibility, and you can even browse the latest Three UK deals to see what’s new. Plus, if you need support from the Three contact team, live chat is always available for your convenience from your device.

Easy Deliveries

They always offer free, next working day delivery on all new purchases when you join! Enjoy this offer on phones, tablets, and MiFi that are ordered before 4 PM for delivery to your billing address. If you upgraded your phone online or over the phone, your new device will be delivered on their chosen date, and you will be charged £4.99 on your next bill— make sure you use a Three discount code or one of our Three voucher codes to save on this fee! If you’re still unsure about making the switch, just read a Three network review to see why customers choose them as their #1 network provider.

FAQs with Three


How do you get the best discount at Three?

The best discounts, deals, and voucher codes can always be found right here at Quidco! You can also browse their exclusive customer offers page, join their mailing list for news about upcoming sales, and choose one of their plan bundles to cut down the cost of your next device!


Does Three do a student discount?

You don't have to sacrifice great cell service when you're on a tight student budget! With a valid academic ID, you can enjoy six months of service at half-price, as well as a free explorer backpack and wireless headphones. Just head to their website for more information on how to save!